andars

17 ms·

151.
Interview with Carver Mead, discussing modern physics (pdf, 2001)(carvermead.caltech.edu)
2 points by andars 10y ago|0 comments
152.
As We May Think (1945)(theatlantic.com)
3 points by andars 10y ago|1 comments
153.
Editing binaries: easier than it sounds (2014)(danluu.com)
2 points by andars 10y ago|0 comments
154.
by andars 10y ago
I appreciate this comment, but I disagree with your statement that "pithy quotes are stupid". Perhaps nothing has changed, but it certainly seems that pessimism, worry, and fear are far more prevalent than optimism now, so I see n
155.
by andars 10y ago
I understand. I was asking for an elucidation of the comment that it was "not what the astronauts or flight controllers believed" and is a "poor abbreviation".
156.
by andars 10y ago
Sure, but it wasn't just any room. As a sidenote, it wasn't a Saturn V.
157.
by andars 10y ago
For an alternate take on it, see this positive review: http://www.maa.org/press/maa-reviews/zero-the-biography-of-a... .
158.
by andars 10y ago
Important to note that the "closed room" was the Command Module on top of a Saturn launch vehicle.
159.
by andars 10y ago
I've read the book, and Kranz definitely says at least once that the phrase "failure is not an option" is a good summary of what the flight controllers believed. Could you perhaps elaborate on what you mean by your comment?
160.
Seeing Circles, Sines, and Signals(jackschaedler.github.io)
3 points by andars 10y ago|0 comments
161.
by andars 10y ago
It certainly isn't uncommon. I didn't mean that it is strange in comparison to other microcontrollers, just that Harvard can be strange for the author of an emulator, depending on their background.
162.
by andars 10y ago
I'm guessing you meant to comment on the vm thread.
163.
by andars 10y ago
They probably aren't describing them very succinctly, because there isn't really a benefit to dropping information in the complete instruction set reference. If you don't want all of the information, look at the instruction s
164.
by andars 10y ago
I can't comment on the difficulty of emulation, but it's probably 'annoying' because it isn't von Neumann, which makes it a tad bit strange.
165.
by andars 10y ago
FYI, your first function in `rcc.c` returns a pointer to a stack-allocated array, which will likely cause you problems.
166.
by andars 10y ago
"Intel loves complexity" Intel loves performance, because people want performance. Complexity is the cost of increased performance. As an example, I would guess that of the ~2000 pages of the instruction set reference, at a minim
167.
by andars 10y ago
Famous? Are you referring to performance or just clock frequency? The Z80 takes more cycles to do the same operation as the 6502, but it also (typically) had a higher max clock frequency, mostly making up for it.
168.
by andars 10y ago
Another interesting fact: If I'm remembering correctly, some models of the PDP8 had only a 1 bit ALU to reduce the purchase price. I thought this was pretty wild when I first heard it, but I guess the performance hit was ok if you coul
169.
by andars 10y ago
Cool project. Virtual machines and assembly are always fun. Not sure if the C compiler is quite ready for the headline, though. I was trying to get the test.c program to run on the vm, but after compiling and assembling, the vm just hangs.
170.
How the Z80’s 4-bit ALU works (2013)(righto.com)
97 points by andars 10y ago|41 comments
171.
by andars 10y ago
Got it. I would have been happiest with this on the front page, but I just happen to really like reading lists. No matter.
172.
by andars 10y ago
Github's status page shows past month uptime, but I would be interested in seeing past year. It seems to me that Github has had a couple of major outages recently. Then again, they stand out more than normal operation.
173.
by andars 10y ago
"new Hacker News rules" I think this should read: current weeklong experimental policy on Hacker News. I also don't feel like this list of books justifies getting flagged, even during this reprieve from political discussion.
174.
by andars 10y ago
I can see dedicating the vast majority of one's time (even 100+ hours a week) to doing something you deeply care about. I would say, however, that the vast majority of people, even entrepreneurs, are not in a situation where their work
175.
by andars 10y ago
Honestly was having a hard time determining whether the linked article was satire or not. The picture of the kid who looks 8 years old at the end put me over the top. What happened to childhood? I hope this ideal is isolated and not every 1
176.
by andars 10y ago
The electoral college makes a lot more sense when you think about electing a President that represents the states, rather than the people.
177.
by andars 10y ago
In case anyone else is interested in reading it, the relevant RFC is here: https://github.com/rust-lang/rfcs/blob/master/text/1504-int1...
178.
by andars 10y ago
"If you cant afford the tax, you should move out and sell/rent out" This makes zero sense to me. Someone bought the property 50 years ago and now is the sole owner, but it is reasonable to force them off their property /
179.
by andars 10y ago
In that case, I agree with you wholeheartedly.
180.
by andars 10y ago
If you are interested in this stuff, I have heard that the book Geometric Algebra for Computer Science is good. You can find the first chapter as a pdf download here: http://geometricalgebra.org/downloads/ga4cs_chapte

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